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#ifndef ASSEMBLING_METHOD_H_
#define ASSEMBLING_METHOD_H_
// この手法では、SVMの学習用サンプル数を減らすことで計算速度の向上について
// 考えるため、LIBSVMは内部で使用される
//
// 使用される学習用サンプルとして、以下の 2 グループに分類される
//
// A. ランダムにDBから選択
// B. 代表となる画像から選択
//
// グループ B については、予め 重みベクトル w_i がわかっているものとし、
// w_iとクエリのベクトル表現との内積 の計算結果の値が、
// 学習用サンプルとして選択される確率となる
// TODO:
// -クエリ入力部分を書く
// -SVMへ学習サンプルを設定する部分を関数化する
// -readdir 部分は、std::vector<std::string> を返す、もしくは
// 引数に参照を取るようにするほうが簡潔にかけて良い気がする
#include "method.h"
#include "svm_wrapper.h"
#include "hog.h"
#include "constant.h"
#include <vector>
#include <string>
class AssemblingMethod : public Method {
SvmWrapper svm;
std::vector<double> wq, q;
const int kM, kBeta;
std::string query_;
void init_svm_problem();
void set_positive_svm();
void set_negative_groupA_svm(const int kGroupM, int& idx);
void set_negative_groupB_svm(const int kGroupM, int& idx);
public:
explicit AssemblingMethod(const std::string& query, int m, int beta)
: svm(1, NULL, false), wq(kTotalDim, 0), q(kTotalDim), kM(m), kBeta(beta),
query_(query){}
void run();
void run(std::vector<std::string>& ranking);
};
#endif // ASSEMBLING_METHOD_H_
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